Rotary pump



UNITED sTATEs PATENT oEEIoE.

RICHARD GILBERT, OF ROCHESTER, NFAV YORK.

ROTARY PUMP.

Specification of Letters Patent No. 16,974, dated April 7', 1857.

To all whom t may concern Be it known that I, RICHARD GILBERT, ofRochester, in the county of Monroe and State of New York, have inventeda new and useful Improvement in Rotary Pumps; and I do hereby declarethat the following is a full and exact description thereof, referencebeing had to the accompanying draw ings and to the letters of referencemarked thereon.

The nature of my invention consists in combining with the annular pistonof rotary pumps, a vibrating link, which combination is found to workmuch easier, and much more perfectly than that of the annular piston andradial arm.

Figure 1 is a vertical section in the line of rotation,.showing theannular piston D, arm F, hinged link J, the end of the shaft Y, and theset-screw P. Fig. 2, is a trans verse section parallel with the axis ofthe shaft Y, showing the cylinder or shell A, the disks, or heads B, andC, the rin'g or piston D, the metallic packing p, the elastic ring g,the arm F, and set scIewP, by which it is adjusted, the stuffing-cap V,and the shaft Y.

The pump consists of a cylinder or shell A, with an off-set 77% as seenin Fig. 1, said cylinder being closed at the ends by heads i B and C.The shaft Y, has its axis in the center of the shell A, and the arm F,is made to pass through the shaft, as seen in Fig. 2, and when properlyadjusted, is held by the set-screw I), the ring D, has a projection towhich the upper end of the vibrating-link J, is hinged, said projectionis a section of a round rod, riveted, or otherwise fastened to theperiphery of the ring D, the projection g, is made and attached, in thesame manner, to the shell A. The vibrating-link J, is made by drilling ahole in each end of a piece of metal, of proper size and length, to :[itthe projections (Z, and g, then cutting off an arc from each hole, ofabout one third, more or less, as seen in Fig. 1. There is a recessturned in both edges of the ring D, as seen in Fig. 2,of sutlicientdepth to receive the elastic ring g, and Inetallic ring p. Theprojection d, and the link J, may also be grooved and packed, as

seen i Fig. 1.

M, is the induction, and O, the eduction pipe.

W'hen the arm F, is perfectly adjusted, the conjugate line of the shellA, and-the ring D, will be opposite that of the ring D, and the arm F,but as the parts wear away, this line changes, yet still preserving aperfect hearing between the ring, and shell, which may be seen from thefollowing, viz: Suppose the arm F, to be set in one fourth of an inch,and the shaft is turning as indicated hy the arrow, the pressure of thewater in the eduction compartment, forces the ring D, to the left,consequently the oonjugate line of D, and F, will come toward the pointj, while that of D, and A, will recede toward w. The wear between F, andD, and D and A, is very slight, but as above shown, is compensated for,when the parts shall have worn so as to become too loose, the arm F, maybe thrown out.

When the water is to be elevated from any considerable depth, thereshould be a common check-valve, placed in the induction pipe M, toprevent any reaction of the water, while the ring D, is passing from gto g2. For a force-pump, to throw a continuous stream, and without anair-chamber, they should he made with a division in the shell, orcylinder A, and offset m, and a ring or piston D, with its vibratinglink J, in each apartment, the arm F, of one being up when that of theother is down therefore when one piston is producing suction, the otherwill be forcing, and vice versa.

I do not claim the annular piston, of itself, neither do I claim aradial arm, (which I do not use in any for1n,) but I do claim, as myinvention, and desire to secure by Letters Patent-,

The vibrating link, (or arm,) J, in combination with the annular pistonD, as, described and for the purpose specified.

RICHARD GILBERT.

Witnesses:

CHARLES GILBERT, DANIEL F. DEMING.

